falls asleep

Loses consciousness naturally

Falls asleep is the moment of transitioning from wakefulness to sleep.

The phrase captures the involuntary nature of sleep onset—you don't choose it so much as surrender to it: She falls asleep the moment her head hits the pillow.

Something that falls asleep may also go numb from restricted blood flow: My foot fell asleep during the movie.

Related

crashes · hits the hay · bedtime · out like a light · nodding · passes out · dozing · counting sheep · somnolence · eyelids · heavy-lidded · nap · power nap · yawning · pillow · drift · fatigue · unconscious

Opposites
sleep-wake transition

falls asleepwakes up

Emerges from slumber

awakens · wakes · rouses · comes to · stirs

consciousness state

falls asleepstays up

Doesn't retire to bed

attentiveness

falls asleepperks up

Becomes more lively

pays attention · focuses · engages · tunes in · energizes

Family

fall, sleep, fell, asleep, sleepy, fallen, falling, sleeping, sleeper

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G